Island



(No Model.)

G. G. BAILEY.

CARBON HOLDER FOR ARC LAMPS. No. 593,172. Patented Nov, 2, 1897.

"Milli!!! THE \onms PETERS co. PHOTO-LITHO.. WASHINGTON. a. c.

UNITED STATES.

PATENT Fries.

CLIFFORD O. BAILEY, OF WOONSOCKET, RHODE ISLAND, ASSIGNOR OF ONE- I HALF TO LEVI C. LINCOLN, OF SAME PLACE.

CARBON-HOLDER FOR ARC-'LAM PS.

SPECIFICATION forming part of Letters Patent No. 593,172, dated November 2, 1897'. Application filed February 26, 1897. Serial No. 625,120. (No model.)

To (1% whom it may concern.-

Be it known that I, CLIFFORD O. BAILEY, a citizen of the United States, residing at \Voonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful. Improvements in Rocker- Glamps for Carbon-Holders on Arc-Lamps; and I do declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in carbon-holders for electric-arc lamps; and it has for its general object to provide a lowercarbon holder adapted to be readily adjusted to hold carbons of various sizes and one which may be quickly adjusted to insurethe proper alinement of the lower carbon with respect to the upper one by the manipulation of a single-screw.

Other objects and advantages of the invention will be fully understood from the following description and claims when taken in conjunction with the accompanying drawings, in which Figure 1 is a perspective view of my improved holder removed from the carrier. Fig. 2 is a longitudinal section of the holder connected to the carrier. Fig. 3 is a detail plan view of the adjustable clamping-jaw; and Figs. 4 and 5 are detail sections taken in the planes indicated by the lines as w and y y, re-.

spectively, of Fig. 2.

In the said drawings similar letters designate corresponding parts in all of, the several views, referring to which.

A indicates a carbon-holder carrier which is provided with an elongated opening a.

13 indicates the tubular jaw of the carbonholder, which has its upper portion cutaway and also has the head I) at its lower end designed in one position to be passed downwardly through the opening a of the carrier, and when turned to hold the said jaw against being withdrawn upwardly from the carrier and 0 indicates the adjustable jaw, the latter being provided with a yoke 0, adapted to pass about the upper reduced. portion of the jaw 13, which is grooved, as indicated by d, for the accommodation of said yoke, so that the jaws can approach sufficiently close together to firmly grasp a small carbon.

The yoke c of the adjustable jaw C is made of such length that the jaws can be adjusted away from each other a sufficient extent to receive a large carbon between them, and said yoke is provided with a threaded aperture e for the reception of a thumb-screw f, the end of which impinges against the tubular jaw, so as to cause the carbon to be firmly clamped between the jaws.

. In virtue of the construction thus far described it will be observed that carbons of various diameters may be quickly and firmly clamped in the holder, so as to rest in the center of the tubular jaw, and may as quickly and easily be removed and replaced by a new carbon when necessary. It will also be observed that the connection of the tubular jaw to the carbon-holder carrier and the connection of the adjustable jaw to the tubular jaw are such that when any of the parts are worn out or broken they may be readily removed and replaced by new ones without damage to the otherparts and without the employment of skilled labor or tools.

The tubular jaw 13 of the holder is secured to the carrier A by the head I) on said jaw in conjunction with the yoke-lever D. (Better shown in Figs. 1, 2, and 4.) This yoke-lever D comprises two members g, which have coincident threaded apertures h in their reduced end portions 4;, and the screw j, which takes through said apertures h and serves as a hinge-pintle and also as a means for adjusting the yoke and the tubular jaw B, as will be presently described. The members g of the yoke-lever have inwardly-directed trunnions k at an intermediate point in their length which bear in diametrically opposite apertures Z in the jaw B, and they also have depending end portions which, when the dowel m of one member rests in the socket n of the other, form a depending protuberance 13, designed to bear upon the carrier A, as shown in Fig. 2.

The yoke-lever D bears at its opposite ends on and is supported by the carrier A and serves in turn to support the tubular jaw B, and it is designed to adjust and adjustably fix the parts connected therewith, so as to insure the proper alinement of the lower carbon with the upper one, it being simply necessary when the lower carbon is to be alined apart, so as to disengage their trunnions from the tubular jaw and permit of the yoke-lever being readily removed. The yoke-lever D may also be. readily applied to the tubular jaw Without removing the jaw from the carrier by simply reversing the operation above described-that is to say, by placing the trun nions 7c in the apertures Z of the tubular jaw and tightening the screw j, so as to bind said screw and also the opposite end of the yokelever against the carrier and thereby lock the members of the lever-yoke against opening. 'From this it will be seen that the single screw j controls the connection of the yoke to the tubular jaw B and the connection of said jaw B to the carrier A, and also serves to adjust the yoke-lever and tubular jaw, so as to secure proper alinement of the lower carbon to the upper carbon.

The yoke-lever D is preferably formed of two members connected in a hinged manner, as described, in order to facilitate placing it upon and removing it from the tubular jaw. I do not desire, however, to be understood as confining myself to such specific construction of said yoke-lever, as it may be of any construction suitable to the purposes of my invention.

Having thus described my invention, what I claim is- 1. In a carbon-holder for electric-arc lamps, the combination of an apertured carrier, carbon-holdin g jaws adjustably connected together; one of said jaws extending loosely through the aperture of the carrier and adapted to bear against the under side of the same, a yoke-lever comprising two members resting on opposite sides of said jaw and pivotally and cletachably connected to the same and adapted to bear at one end upon the carrier and having coincident threaded apertures at their opposite ends, and the adj Listing-screw taking through said apertures and impinging upon the upper side of the carrier and serving also as a hinge-pintle for the yoke members, substantially as specified.

2. In the carbon-holder for electric-arc lamps, the combination of an apertured carrier, a tubular carbon-holding jaw extending loosely through the aperture of the carrier and having an enlargement bearing against the under side of the same and also having the diametrically opposite apertures Z, at an intermediate point in its length, a second jaw connected with the tubular jaw and adapted to clamp a carbon in the same, and the yokelever D comprising the members g having in wardly-directed, lateral trunnions at an intermediate point of their length bearing in the apertures Z, of the tubular jaw and also having the coincident threaded apertures adjacent to one end, and the adj usting-screw taking through said apertures and impinging upon the upper side of the carrier, and serving also as a hinge-pintle for the yoke members, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

CLIFFORD O. BAILEY.

Witnesses:

FRED. A. DARLING, GEo. W. SPAULDING. 

